Card counting is a legal strategy on many online casino sites. It is not considered cheating, as card counting requires you to use a skill for advantage rather than manipulating the game itself. However, some casinos may not allow this strategy, as it clearly gives you an edge over the house.
The legal status of card counting in poker can vary depending on your region as well. In US casino sites, the chance of being punished is higher than in European casinos. But, still, there is no guarantee that you will not get punished for using any technique to manipulate the game.
The legality of card counting can also depend on the selected poker table and the casino. On any tables where players have incomplete information about the cards in play, such as Texas Hold'em, card counting may be less effective and less likely to be prohibited. However, in games where players have more information about the cards, such as Stud or Omaha, this strategy can be very helpful and casinos usually will not allow it.
It is important to follow the rules and regulations of the casino or poker room you play at, as if you don’t, you may get your account banned. One of the most common ways for casinos to punish illegal card counting is to limit your account and ask you to stop doing that.